@book{
      international2011iaea,
      title={World Wide Proficiency Test: Determination of Natural and Artificial Radionuclides in Moss-Soil and Water 
IAEA-CU-2009-03},
      author={ },
      series={entity},
      number={22 },
      year={2011},
      isbn={ },
      url={/publications/8675/world-wide-proficiency-test-determination-of-natural-and-artificial-radionuclides-in-moss-soil-and-water-iaea-cu-2009-03 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }